All are true about mammary gland, except ?

Ans. is 'd' i.e., Nipple is supplied by 6th intercostal nerve Mammary gland Breast (mammary gland) is a modified sweat gland present in the superficial fascia of pectoral region. Veically it extend from 2" to 6' ribs at midclavicular line and horizonal extent is from sternal margin to midaxillary line at the level of 4th rib. Aerial supply of breast Aerial supply of breast includes ? Perforating branches of internal mammary aery in II",Hird, 1 v.-"h intercostal spaces. Thoracoacromial, lateral thoracic and superior thoracic branches of axillary. Mammary branches, from rd, 3rd and 4'h posterior intercostal aeries. Venous Drainage There is an anastomotic circle of veins around the base of nipple-the circulus venosus of Haller. Veins from this and from the glandular tissue radiate to the circumference of the gland and drain into axillary, internal mammary and posterior intercostal veins. Nerve supply Sensory and sympathetic innervation is anterior and lateral cutaneous branches of 4th,5th and 6th intercostal nerves. Nipple is mainly innervated by the 4th intercostal nerve.